PLACID Instruments
Showing 1–12 of 21 results
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The impedance tube (also know as Kundt Tube) measurement obtains the normal incidence absorption coefficient of a layer of textiles with a small diameter (usually less than 10 cm)
The results can be used to compare the basic absorption performance of the material and for acoustics simulations.
In practice, the absorbers can be quite large and their structure and configuration may be complex and part of acoustic designs. Furthermore, they will be exposed to real sound fields where the incident sound may come from many directions.
The PLACID impedance tube kit consists of 2 or 3 tubes with a diameter of 16, 30, and 100 mm to cover the whole frequency range. At the end of the tube, a loudspeaker is mounted and will emit a precisely quantified sound generated by the signal generator and amplified by the amplifier. The 4 channel Data Acquisition System (DAQ) will gather and record all measurement data and relay it to the software.
The microphones will measure the sound level at each given position. The software will then calculate the normal incident acoustic properties of the material based on the frequency response functions measured between the various measurement locations.
The Impedance tube kit can determine the sound absorption coefficient as well as the transmission loss.
PI8810, 100 mm impedance tube, frequency range 50 Hz – 1600 Hz
PI8803, 30 mm impedance tube, frequency range 800 – 6300 Hz
PI88016, 16mm impedance tube, frequency range 5000 – 10000 Hz
Impedance tube can measure sound absorption coefficient as well as transmission loss, ISO10543-2, ASTM E1050-08.
Microphones used: 1/4″ Class I or class II , 20 Hz to 20 kHz (BNC to SMB connector).
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Measurement microphone set PMP40-1B
The PLACID PMP40-1B is a high-precision condenser microphone manufactured in compliance with the IEC 61094-4
requirements and classified as a class 2 microphone set.The PMP40-1B microphone set is optimized for free-field measurements.
As all PLACID microphones, the PMP40-1B comes with an individually calibration certificate. - Quick View
PLACID PNP21 Preamplifier
The PLACID PNP21 1⁄2” Preamplifier is a robust preamplifier designed to be used for acoustic measurements with condenser microphones.
The self-noise is very low, it has a wide dynamic range and frequency response.
- Frequency range: 5.0 Hz to 100 kHz
- Noise: <2.0 μV
- Usage: General purpose
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PLACID PNP22 Preamplifier
The PLACID PNP22 1⁄2” Preamplifier is a robust preamplifier designed to be used for acoustic measurements with condenser microphones.
The self-noise is very low, it has a wide dynamic range and frequency response.
- Frequency range: 5.0 Hz to 100 kHz
- Noise: <2.0 μV
- Usage: General purpose
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The PLACID PNP41 1/4” Preamplifier is a robust preamplifier designed to be used for acoustic measurements with condenser microphones. The self-noise is very low, it has a wide dynamic range and frequency response.
- Frequency range: 5.0 Hz to 100 kHz
- Noise: <2.5 μV
- Usage: General purpose
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Placid has manufactured high tech, feature rich and accurate sound level meters. We have a large collection of sound level meters that can be used for many applications where the noise levels should be measured.
The Placid SL-02 sound level meter is an integrating (Leq) sound level meter that measures the sound pressure level (SPL) in Decibel (dB).
Placid SL-02 features:
- compliance with IEC 61672-1:2002 Class 2
- able to measure Leq, Lmax, Lmin, SPL
- datalogger for 64000 records
- pc interface with software
- AC/DC signal output (recording, post processing)
- Back-lit display
Placid SL-02 specifications:
- Measurement level range: 30~130dB
- Accuracy: ±1.4dB (ref. 94dB @ 1 kHz)
- Frequency Weighting: A / C
- Time Weighting: Fast, Slow
- Frequency Range: 20Hz to 8KHz
- Microphone: ½ inch electret condenser microphone
- Measuring Time: 10 seconds, 1 minute, 5 minutes, 10 minutes, 15 minutes, 30 minutes, 1 hour, 8 hours, 24 hours
- Auxiliary Outputs: AC/DC Output
- Battery: 4 x 1.5V AA size battery
- Dimensions: 270 x 85 x 40 mm
- Weight: Approximately 400 gram
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PLACID PMP20 Microphone
The PLACID PMP20 is a high-precision condenser microphone manufactured in compliance with the IEC 61094-4 requirements and classified as a class 1 microphone.
The PMP20 microphone is optimized for free-field measurements.
As all PLACID microphones, the PMP20 comes with an individually calibration certificate. - Quick View
PLACID PMP21 Microphone
The PLACID PMP21 is a high-precision condenser microphone manufactured in compliance with the IEC 61094-4 requirements and classified as a class 1 microphone.
The PMP21 microphone is optimized for free-field measurements.
As all PLACID microphones, the PMP21 comes with an individually calibration certificate. - Quick View
PLACID PMP22 Microphone
Specifications
Basics
The PLACID PMP22 is a high-precision condenser microphone manufactured in compliance with the IEC 61094-4 requirements and classified as a class 2 microphone.
The PMP22 microphone is optimized for free-field measurements.
As all PLACID microphones, the PMP22 comes with an individual calibration certificate. - Quick View
PLACID PMP27 Microphone
The PLACID PMP27 is a high-precision condenser microphone manufactured in compliance with the IEC 61094-4 requirements and classified as a class 1 microphone.
The PMP27 microphone is optimized for pressure-field measurements.
As all PLACID microphones, the PMP27 comes with an individually calibration certificate. - Quick View
PLACID PMP40 Microphone
The PLACID PMP40 is a high-precision condenser microphone manufactured in compliance with the IEC 61094-4 requirements and classified as a class 1 microphone.
The PMP40 microphone is optimized for free-field measurements.
As all PLACID microphones, the PMP40 comes with an individually calibration certificate. - Quick View
PLACID PMP21 Microphone
The PLACID PMP21 is a high-precision condenser microphone manufactured in compliance with the IEC 61094-4 requirements and classified as a class 1 microphone.
The PMP21 microphone is optimized for free-field measurements.
As all PLACID microphones, the PMP21 comes with an individually calibration certificate.
